Is TokenList Support only for OneToManyRelationship

Support
#1

Is TokenList Support only for OneToManyRelationship Mapping

#3

Hi,

the TokenList component can be used in case of many-to-many relationship. For example:

<dsContext>
    <datasource id="orderDs"
                class="com.sample.sales.entity.Order"
                view="order-edit">
        <collectionDatasource id="productsDs" property="products"/>
    </datasource>
    <collectionDatasource id="allProductsDs"
                          class="com.sample.sales.entity.Product"
                          view="_minimal">
        <query>select p from sales$Product p order by p.name</query>
    </collectionDatasource>
</dsContext>
<layout>
    <tokenList id="productsList" datasource="productsDs" inline="true" width="500px">
        <lookup optionsDatasource="allProductsDs"/>
    </tokenList>

Regards,
Gleb

#5

Shall, I use TokenList for ManyToOneRelationship Mapping

#6

No, for many-to-one the PickerField, LookupField or LookupPickerField components are suitable.

#7

OK.

For example,
I have Employee Entity with field name and USER(ManyToOneMapping),for user field I use TokenList Component for multiselect option it is not working.

#8

Could please you describe in more details your question? A demo project in which the problem is reproduced is appreciated.

Regards,
Gleb

#9

I attached my demo project.tokenlist.zip (83.4 KB)

In that,I need to persist data into database.

#10

I can’t create an Employee, I get:

ClassCastException: com.haulmont.cuba.gui.data.impl.DatasourceImpl cannot be cast to com.haulmont.cuba.gui.data.CollectionDatasource

Could you please fix your demo project?

#11

fixed the issue.tokenlist.zip (82.5 KB)

#12

So, according to your demo project, I can see that the TokenList field isn’t related with the editing entity and, as I said before, the TokenList component is not intended to be used in case of the many-to-one relation. For the many-to-one relation, the PickerField, LookupField or LookupPickerField components are used.

Just add <field property="user"/> to your field group.

Regards,
Gleb

#13

But, I need to select multiple user and it is not possible in PickerField,LookupField and LookupPickerField

#14

You can’t select multiple users since you use the many-to-one relation. Only one user can be selected.